code: def test_threaded_queue_mode(source, options):
      """
      Test for the Thread Queue Mode in CamGear API
      """
      try:
          if platform.system() == "Linux":
              stream_camgear = CamGear(
                  source=source,
                  backend=cv2.CAP_FFMPEG,
                  logging=True,
                  **options,
              ).start()
          else:
              stream_camgear = CamGear(
                  source=source, logging=True, **options
              ).start()
          camgear_frames_num = 0
          while True:
              frame = stream_camgear.read()
              if frame is None:
                  logger.debug(
                      "VidGear Total frames: {}".format(
                          camgear_frames_num
                      )
                  )
                  break
  
              time.sleep(0.2)  # dummy computational task
  
              camgear_frames_num += 1
          stream_camgear.stop()
          actual_frame_num = return_total_frame_count()
          if (
              "THREADED_QUEUE_MODE" in options
              and not options["THREADED_QUEUE_MODE"]
          ):
              # emulate frame skipping
              assert camgear_frames_num < actual_frame_num
          else:
              assert camgear_frames_num == actual_frame_num
      except Exception as e:
          if (
              isinstance(e, RuntimeError)
              and source == "im_not_a_source.mp4"
          ):
              pass
          else:
              pytest.fail(str(e))
  
file_path: vidgear/vidgear/tests/videocapture_tests/test_camgear.py
imports: import os
  import cv2
  import time
  import queue
  import numpy
  import pytest
  import logging
  import platform
  import tempfile
  from vidgear.gears import CamGear
  from vidgear.gears.helper import logger_handler
label_desc: Use image node_id 4 for calling a global function with example usage: test_threaded_queue_mode(source, options) without return types